Seiko Cal. 4457 - 620

The Seiko 4457-620 represents an important milestone in Seiko's 1977 lineup. Powered by the 4457 caliber with 18j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-93b553f91539]

Also known as: Turtle, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1977

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